Algebraeasy · Past Paper
Expand (a+b+c)^2.
Aa^2+b^2+c^2+2ab+2bc+2ca
Ba^2+b^2+c^2+ab+bc+ca
Ca^2+b^2+c^2
D(a+b)^2+c^2
✓ Correct Answer: A — a^2+b^2+c^2+2ab+2bc+2ca
This is the standard expansion for the square of a trinomial.
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